Unfilled faces?

I’m not quite sure if that’s what it’s called, but I am making a key chain with a logo cutout on it for my technology class and when I push/pull it, the bottom/top (depending on if I pushed or pulled) face doesn’t get filled. I’ve included a screenshot of the bottom after I pulled up 10 mm. Please help! This even has my teacher stumped! Thanks in advance.>

It would be helpful if you could upload the SKP file.

Double click on the white face, then use CTRL+C to copy it, then delete all the geometry CTRL+A then DEL, then go to Edit and select Paste in place, then use push pull again and it should work.
Having the file will be better !

Thank you so much!
:purple_heart: